Phi 1 Orionis

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Star
Phi 1 Orionis
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Orion
Right ascension 05 h 34 m 49.24 s
declination + 09 ° 29 ′ 22.5 ″
Apparent brightness 4.39 likes
Typing
B − V color index −0.16 
U − B color index −0.97 
R − I index −0.17 
Spectral class B0 IV ...
Astrometry
parallax (3.00 ± 0.25)  mas
distance (1087 ± 91)  ly
(333 ± 28)  pc  
Visual absolute brightness M vis −3.22 mag
Proper movement 
Rec. Share: (0.27 ± 0.29)  mas / a
Dec. portion: (−2.26 ± 0.12)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name φ 1 Orionis
Flamsteed name 37 Orionis
Bonn survey BD + 9 ° 877
Bright Star Catalog HR 1876 [1]
Henry Draper Catalog HD 36822 [2]
Hipparcos catalog HIP 26176 [3]
SAO catalog SAO 112914 [4]
Tycho catalog TYC 705-2401-1 [5]Template: Infobox star / maintenance / specification of the TYC catalog
Other names FK5 208 • TD1 4886
annotation
  1. ↑ Calculated from apparent brightness and distance.

Phi 1 Orionis ( φ 1 Orionis , φ 1 Ori , also Khad Prior ) is a star, it is about 0.71 ° away from its companion Phi 2 Orionis (also Khad Posterior ). Khad comes from Arabic , the Arabic name of the two stars is chadd al-dschauza '  /خد الجوزاء / ḫadd al-ǧawzāʾ  / 'cheek of the central'.

Individual evidence

  1. ↑ a b c Hipparcos catalog (ESA 1997)
  2. ↑ a b c Bright Star Catalog
  3. ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)